1 . 如图,点
为正方形
边
上异于点
的动点,将△
沿
翻折成△
,使得平面
平面
,则下列三种说法中正确的个数是
(1)存在点
使得直线
;
(2)平面
内存在直线与
平行;
(3)平面
内存在直线与平面
平行.
![](https://img.xkw.com/dksih/QBM/2015/10/26/1572265547292672/1572265553256448/STEM/0fe9e755-b2b7-40bf-acd7-f38b2eddbf9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea440fcc8f186f5de9105b18e152152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e0e3a328e0bb05b3d5bb92f19d37b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
(1)存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eeda3990158db8d2e916d159cc1af8d.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
(3)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea440fcc8f186f5de9105b18e152152.png)
![](https://img.xkw.com/dksih/QBM/2015/10/26/1572265547292672/1572265553256448/STEM/0fe9e755-b2b7-40bf-acd7-f38b2eddbf9b.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
2016-12-03更新
|
778次组卷
|
4卷引用:河北省石家庄市第二中学2016-2017学年高一下学期期末考试数学(理)试题
河北省石家庄市第二中学2016-2017学年高一下学期期末考试数学(理)试题河北省石家庄市第二中学2016-2017学年高一下学期期末考试数学(文)试题2016届浙江省温州市十校联合体高三上学期期初联考理科数学试卷(已下线)2.3.4 平面与平面垂直的性质-2020-2021学年高一数学课时同步练(人教A版必修2)
2 . 如图,在四棱锥
中,底面
为矩形,侧面
底面
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ace0a57bc2566639e3c229524f23129.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/08df75fd-f9c8-4b69-bcaa-64e70adc9b70.png?resizew=224)
(1)求证:
面
;
(2)设
为等边三角形,求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ace0a57bc2566639e3c229524f23129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/08df75fd-f9c8-4b69-bcaa-64e70adc9b70.png?resizew=224)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
2016-12-03更新
|
712次组卷
|
2卷引用:2014-2015学年河北省满城中学高一下学期期中理科数学试卷
解题方法
3 . 正方形
所在平面与平面四边形
所在平面互相垂直,
是等腰直角三角形,
,
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971941588992/1571971947249664/STEM/d335cd4a9e7044a994dfbcd941afbbc5.png?resizew=230)
(1)求证:
平面
;
(2)设线段
的中点为
,在直线
上是否存在一点
,使得
平面
?若存在,请指出点
的位置,并证明你的结论;若不存在,请说明理由;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e550506afb19665869af44183f8472.png)
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971941588992/1571971947249664/STEM/d335cd4a9e7044a994dfbcd941afbbc5.png?resizew=230)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)设线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e076c4c39e0591ed69ff780fb5a1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
4 . 如图,在四棱锥
中,底面
是边长为
的正方形,
分别为
的中点,侧面
底面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/a59496fe-af17-4365-a9e8-8704410f3fbe.png?resizew=183)
(1)求证:
∥平面
,
(2)求证:直线
平面
,
(3)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ae9e915d670edaa52d9ad9f3f071a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5363352988977cd5c38286b17a1097.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/a59496fe-af17-4365-a9e8-8704410f3fbe.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(3)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2014·北京东城·一模
名校
5 . 如图,在三棱锥
中,
,平面
平面
为
中点,
分别为线段
上的动点(不含端点),且
,则三棱锥
体积的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852cf20f630bc72135dd90e442421b3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5936c7ff73fd5ab2b24e887acef6a2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99e4454d57101b16bc2e3198f213a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51dfab0c1ec275ff83d08c7293968c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7ecae9f980807a1208594ab89ef061c.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571718289285120/1571718294470656/STEM/306efe3758e04ea18e83387659a5767f.png?resizew=144)
您最近一年使用:0次
2016-12-03更新
|
2286次组卷
|
5卷引用:河北省衡水市2018届高三高考模拟联考理数试题
河北省衡水市2018届高三高考模拟联考理数试题(已下线)2014届北京市东城区高三下学期综合练习(一)理科数学试卷2015-2016学年江西南昌二中高二下期中数学(理)试卷2016-2017学年重庆万州二中高二理上期中数学试卷贵州省遵义市第四中学2017-2018学年高二上学期第一次月考数学试题
13-14高二下·河北保定·期中
6 . 如图,正方形
所在的平面与平面
垂直,
是
和
的交点,
,且
.
(1)求证:
平面
;
(2)求二面角
的大小.
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/7cad797784a44cd4b84e73684ca8b533.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/a536e2b2af944239bd55b7d91a8d3221.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/bde5f477ba554beb99513bc01d5fd510.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/a313380993fe407f8bbcc8776628777e.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/c3d8ab15ef954676b1cd5181928dae6a.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/04806b55702c4583b59fe0418250ed2b.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/0a2914c07c46465da87f9cdb9d620b35.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/4c06c64c7a5d402db6c42e911d9d2796.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/8eaebe1b6aa44d5390660fb7278b6f9b.png)
(2)求二面角
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/18725332bc7048b6b054537315a72580.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571716227932160/1571716233674752/STEM/ca3fb06b2ca54520a1376ca112980807.png)
您最近一年使用:0次
7 . 如图,在三棱柱ABC-A1B1C1中,AA1C1C是边长为4的正方形.平面ABC⊥平面AA1C1C,AB=3,BC=5.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/4ca3cfb7-fea0-4c1f-b33e-a301806e022c.png?resizew=140)
(Ⅰ)求证:AA1⊥平面ABC;
(Ⅱ)求二面角A1-BC1-B1的余弦值;
(Ⅲ)证明:在线段BC1存在点D,使得AD⊥A1B,并求
的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/4ca3cfb7-fea0-4c1f-b33e-a301806e022c.png?resizew=140)
(Ⅰ)求证:AA1⊥平面ABC;
(Ⅱ)求二面角A1-BC1-B1的余弦值;
(Ⅲ)证明:在线段BC1存在点D,使得AD⊥A1B,并求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04c68f1ef1e37534b5bbc7a1f592ef7.png)
您最近一年使用:0次
2016-12-02更新
|
4629次组卷
|
30卷引用:河北省涞水波峰中学2020-2021学年高二上学期期末数学试题
河北省涞水波峰中学2020-2021学年高二上学期期末数学试题2013年全国普通高等学校招生统一考试理科数学(北京卷)(已下线)2014届上海交大附中高三数学理总复习二空间向量与立体几何练习卷2016-2017学年湖北省重点高中联考协作体高二下学期期中考试数学(理)试卷湖北省宜昌市葛洲坝中学2018届高三9月月考数学(理)试题【全国百强校】江苏省泰州中学2017-2018学年高二6月月考数学(理)试题【全国百强校】宁夏银川一中2019届高三第四次月考数学(理)试题专题11.8 空间向量与立体几何(练)-江苏版《2020年高考一轮复习讲练测》湖南省长沙市长郡中学2017-2018学年高二下学期入学考试数学(理)试题人教A版(2019) 选择性必修第一册 过关斩将 第一章 空间向量与立体几何 专题强化练3 立体几何中的存在性与探究性问题福建省连城县第一中学2020-2021学年高二上学期第一次月考数学试题江西省景德镇一中2020-2021学年高二(2班)上学期期中考试数学试题(已下线)第一章 空间向量与立体几何单元检测(知识达标卷)-【一堂好课】2021-2022学年高二数学上学期同步精品课堂(人教A版2019选择性必修第一册)(已下线)专题03 空间向量与立体几何-立体几何中的存在性与探究性问题-2021-2022学年高二数学同步练习和分类专题教案(人教A版2019选择性必修第一册)(已下线)专练9 专题强化练3-立体几何中的存在性与探究性问题-2021-2022学年高二数学上册同步课后专练(人版A版选择性必修第一册)(已下线)期中考试重难点专题强化训练(1)——向量的综合运用-2021-2022学年高二数学单元卷模拟(易中难)(2019人教A版选择性必修第一册+第二册)海南热带海洋学院附属中学2021届高三11月第二次月考数学试题江西省靖安中学2021-2022学年高二上学期第一次月考数学(理)试题苏教版(2019) 选修第二册 名师精选 第六章 空间向量与立体几何云南省弥勒市第一中学2021-2022学年高二上学期第三次月考数学试题安徽省合肥市第八中学2021-2022学年高二下学期平行班开学考理科数学试题河南省濮阳市范县第一中学2021-2022学年高二上学期第二次月考检测数学试题河南省鹤壁市浚县浚县第一中学2021-2022学年高一下学期7月月考数学试题2023版 北师大版(2019) 选修第一册 名师精选卷 第三章 空间向量与立体几何北京市丰台区第十二中学2021-2022学年高二上学期期中数学试题重庆市忠县乌杨中学校2021-2022学年高二上学期期中数学试题云南省曲靖市罗平县第二中学2021-2022学年高二上学期第二次月考数学试题福建省福州市福州中加学校2023-2024学年高二上学期期中数学试题(已下线)第五章 破解立体几何开放探究问题 专题一 立体几何存在性问题 微点1 立体几何存在性问题的解法(一)【基础版】(已下线)【一题多解】存在与否 向量探索
2012·河北衡水·一模
解题方法
8 . 如图,已知平面
平面
,A,B是平面
与平面
的交线上的两个定点,
,
,且
,
,
,
,
,在平面
内有一个动点P,使得
,则
的面积的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa807136194c18d3ac58902c67f9333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6137d4cb7ec4f695df07c3d8a5a276c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a795e9b1e23738a5a4c6c5e07ab4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9536a2be7b84612f45cc875a00c5a5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd2e101f851bb77cfa793f4038015cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9c4807350e42413a2d54b63e18b728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/13/c1e3b302-e874-484e-bb2b-eef0828ce9c6.png?resizew=232)
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9 . 如图所示,△ADP为正三角形,四边形ABCD为正方形,平面PAD⊥平面ABCD.点M为平面ABCD内的一个动点,且满足MP=MC.则点M在正方形ABCD内的轨迹为
![](https://img.xkw.com/dksih/QBM/2016/8/3/1572951317946368/1572951323820032/STEM/9bfeb81bb464429ea23aeffad01db88d.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/2016/8/3/1572951317946368/1572951323820032/STEM/9bfeb81bb464429ea23aeffad01db88d.png?resizew=159)
A.![]() | B.![]() | C.![]() | D.![]() |
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